Tension member for concrete construction.



E. N. PAGELSEN'.

TENSION MEMBER FOR CONCRETE CONSTRUCTION.

APPLICATION FILED APR 13, 1907.

1,032,856. Patented 'July l, 1912.

6, dwmol Nay/(Am.

EDVV ARD PAG-ELSEN. OF DETROIT TJLIGHIGAN,

JENKS, 0F PITTSBURGH, PENNSYLVANIA.

TO THOMAS VJ.

FEM)

ASSIGNOR, BY MESNE ASSIGNMENTS,

TENSION MEMBER FUR CONCRETE C(JN'STRUCTION.

Application filed April 15.

To all whom it may concern:

lie, it known that I, lhnvann N. litoinisi a eitizen of the United States, and a reaidtrnt. oi the city of Detroit. in the count o't' and linpi'ovod 'lomion )vlelllllQl lot the follow- My .lltl] l 1\Ltl tension menthol, whieh is shown in the ztctftittllmll t'lllfl drawing. ltnined with a e \jlinth-ieal t-ot'e o1- hod l, longitudinal til'iS-l extending along: the hotly, and transverse ribs 3 extending hetween the longitudinal ribs to {UNI} pot-lion;

Metal rods are. plated in the llfllitllllr of concrete slabs and beams tor the purpose of taking up the tensional stressm 'wh'a-h develop therein. and it in of the utmost linpoitaneo that the strongest possihle union shall exist between the metal and the eon- (a'ete. ho deop mt-hots formed hy the longitnclii'tal i'ihs l and t'lil'tlifl'tlfit, rihs 3 are well adapted to inFnro thi.-=, union as the. t-onei'eto in these 'poelt'ets is in the loi'n't of largo and strong: proieetiom having large areas of eontaet with the ribs 3. while the length of the pt'ojeetions provide large shearing; areas. Staggering: thew transverse ribs 35 around the hat prevents CX 'tHt-tlVt" t1aina falling: on the ttltilttl t'e, l at an) one point. ll also makes this tensi n them her easier to nianut'aettu'e.

ln t'einl'oi'eod eonei'ete eonstruetion, the ilzwtit' nmsis in hardening sht'inks around the teinlot'eing tueuthei'. \lith equal tonle strengths. and equal ()tilflillllhlllth for union het ween the eou-i'ete and the hats.

the hai' with llltLl-dlltlllkfil diameter is to he pi-e'l t-ri'ml heeause the nreatost shrinkage l tlVQGll the metal and (out-rote grip oeeut's [H greatest.

when: tho thielmess oi t-onerete Specification of Letters Patent.

Patented J ulv 1 ti 1912..

190']. nel'ial No. 368.045

l l l t l l l For hurt; provided with extensions to engage the concrete, of those with equal measuriy llltltll'ti over these extensions, :1 round rod has the gt-eaten strength As the ribs need pt'ojcet no farther :llon'i a round core than from an other, the diameter ot' thitype of hay ill he 1e than that ol any other with the sumo, tat-tors otf' usefulness] Having now explained my improvements, what I elaiin an my invention and desire to secure by Letters Patent '1. A tension ineiuheifor reinforcing t'i'ete eonstrnetion. edinpriaing hotly, four longitudinal i'ih, pnding; along and equally spat-ed around the same, and

between the longitudinal lllJH to form pot-hots, the outer slit tnees oi the ribs heing' eonvex and forming; augments of ii't-les, and the ribs being st'aggct'ed around tho l)( (l V portion 24 A, metal hat for i-einl ort-ing eonti'etn eonstrnetion tftilttptlfittl ol an integral body portion having outwardly t'tllYLtl stufl ates, four or more longitudinal lllis eo-extonsive with the hat \thieh divide the sut'fnee into seetions otifat'es, and t'ltmH t'ihs, aeh ex tonding tltlOrh' one flat-e oi et'tio1'i and 11101;;- ing' into two adiat'ent longitudinal tilts. whet'ehv eaeh settion or late is (lltltit'tl into a longitudinal series of tan or t,lepi'e,, si 1n=, each having; a vonvex hottoui. the hightwt portion of \Ylllt'll lies helow a plane eonneetingthe top poi-lions o't' adjaten't longi tudinal i'ihs :atlmtantially a deaerihed.

In testimony whereof l have {nntl this speeilieatio'n in the presence ol two fitlliSKl'liQ- ing witnesses.

l llld'kllll N. l.\tll lliSlll l.

\Vitnesses Emzvxnn'rn ill. BROWN. N. lmt'en Eli uao: 

